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Finding the Fourth Proportional to 274.20, 375.83 and 270.42

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Solution

The fourth proportional to 274.20, 375.83 and 270.42 is: 370.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.20 : 375.83 = 270.42 : x
  2. Step 2: Convert to fraction form
    274.20/375.83 = 270.42/x
  3. Step 3: Cross multiply
    274.20x = 375.83 × 270.42
  4. Step 4: Simplify right side
    274.20x = 101,630.60
  5. Step 5: Solve for x
    x = 101,630.60/274.20
  6. Step 6: Final answer
    x = 370.64

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.